My immediate reaction was of concern.  But then I asked my instructor.   He pointed out that only couples competing as amateurs have to register.  Pro-Am couples are covered by the pro's registration.  (Assuming he has one.)   Of course, this doesn't help you if you're an amateur couple!   Good luck. 
 
   [Turns out, the comp I was interested in--Empire State Dancesport--is running my events on Thursday and Friday, so I won't be able to compete.  Sometimes it's easier to stick to one day comps!  Hope to attend Saturday nite as a spectator though!]   1a2